The high magnetic field dependency of 2D exciton states in GaAs/AlAs multi-quantum-wells
β Scribed by T. Yasui; Y. Segawa; Y. Iimura; Y. Aoyagi; I. Mogi; G. Kido
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 262 KB
- Volume
- 184
- Category
- Article
- ISSN
- 0921-4526
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Magneto-photoluminescence (PL) experiments of very thin GaAs/Al 0.3 Ga 0.7 As quantum wells were performed in a magnetic field (B) of up to 20 T. It has been observed that the diamagnetic shift changes abruptly from Ξ² B 2 to Ξ± B around 5 T as B increases, and both Ξ± and Ξ² become larger as the well-w
Using a variational procedure within the effective-mass approximation we have calculated the binding energies of shallow-donor impurities in cylindrical GaAs quantum-well wires, in an axial magnetic field and an infinite confinement potential. In contrast to the previous results in quantum wells, we